**Unofficial Tyre Thread**

Rroff said:
Yes trying to avoid aquaplaning is one reason but the major consideration is to avoid the back stepping out because oversteer is generally harder to manage and more likely to result in a serious incident than understeer, and if you do get aquaplaning initiated first at the rear that is the likely outcome.
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So both ‘reasons’ are due to aquaplaning ? You agreed aquaplaning Added a ‘but’ then mentioned aquaplaning again.

Why would a car oversteer due to old vs new tyres ? New tyres do not have more grip. Where does this myth come from ?

Anything rwd is staggered anyway so it’s a largely pointless discussion for a fed which would only oversteer driving like a pleb. Aquaplaning is often driving too fast for conditions and not driver can control a tyre surfing water. The point about the rear tyres having more tread is due to it being lighter so aquaplaning more likely.
 
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Simon said:
Why would a car oversteer due to old vs new tyres ? New tyres do not have more grip in the dry. Where does this myth come from ?
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Not entirely a myth - especially on cheaper brands the compound is often differ as the tyre wears - grippier compound is often used on the outside to meet tyre tests etc, but more durable less grippy compound is used further in.

Even with decent tyres, exposure to UV and general aging can cause the compound to harden and/or otherwise deteriorate and affect the grip level
 
Armageus said:
Not entirely a myth - especially on cheaper brands the compound is often differ as the tyre wears - grippier compound is often used on the outside to meet tyre tests etc, but more durable less grippy compound is used further in.

Even with decent tyres, exposure to UV and general aging can cause the compound to harden and/or otherwise deteriorate and affect the grip level
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I removed the dry bit in an edit as I thought we’d get into details away for the point being

It’s all about tread depth as to why new tyres should go on rear
 
tom_e said:
You own a RWD car that isn't don't you?
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Ha yes true. Was thinking of my bmw where new on rear doesn’t apply. Went 235 tyres upgrade from 215 on the VZ but 2tons is useful for the river aka roads I drove today

Not sure weight distribution on the born actually. But I guess not having wider on back does help avoid aquaplaning. The traction control is so good on it you’d have be doing something stupid to get it to oversteer too

My old born had new rears on it and at 28k the fronts were pretty low. Had one moment on the m4 in heavy rain where the front went light.
 
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I've actively tried to get my ID to kick out just to see how far I can push it but even in rubbish conditions the computer foils me :o
 
Simon said:
So both ‘reasons’ are due to aquaplaning ? You agreed aquaplaning Added a ‘but’ then mentioned aquaplaning again.

Why would a car oversteer due to old vs new tyres ? New tyres do not have more grip. Where does this myth come from ?

Anything rwd is staggered anyway so it’s a largely pointless discussion for a fed which would only oversteer driving like a pleb. Aquaplaning is often driving too fast for conditions and not driver can control a tyre surfing water. The point about the rear tyres having more tread is due to it being lighter so aquaplaning more likely.
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There are plenty of articles on this by people qualified to know what they are talking about, the goal ultimately is to find the limit first on the front not rear in any situation.
 
Rroff said:
There are plenty of articles on this by people qualified to know what they are talking about, the goal ultimately is to find the limit first on the front not rear in any situation.
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It’s mainly about a FWD typically being lighter on the rear so hitting standing water, in the absence of weight, more tread is preferable. Otherwise the rear overtakes the front very quickly. Often seen on motorways in heavy rain when people have 1.7mm rear tyres cause they only wear and replace the fronts

Anyway all the qualified advice is new tyres on the rear so I'm aligned with that. Nothing about finding limits, its about safety in wet conditions.
 
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Simon said:
It’s mainly about a FWD typically being lighter on the rear so hitting standing water, in the absence of weight, more tread is preferable. Otherwise the rear overtakes the front very quickly. Often seen on motorways in heavy rain when people have 1.7mm rear tyres cause they only wear and replace the fronts

Anyway all the qualified advice is new tyres on the rear so I'm aligned with that. Nothing about finding limits, its about safety in wet conditions.
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Still have no idea why you are disagreeing with what I said when what you are saying is the same as what I said in my original post, finding the limits isn't just about manual car control but also not being caught out by the car setup.
 
Rroff said:
Still have no idea why you are disagreeing with what I said when what you are saying is the same as what I said in my original post, finding the limits isn't just about manual car control but also not being caught out by the car setup.
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'Yes trying to avoid aquaplaning is one reason but the major consideration is to avoid the back stepping out because oversteer '

I wasnt disagreeing. I simple said you were saying the same thing but thinking it was different - anyway whatever. Seems you have a ability to create a strawman from a new POV.

'Finding the limits' is not something you do in aquaplaning events or emergency braking on the road...

' the goal ultimately is to find the limit first on the front not rear in any situation.'
On a track you may want to find the limits, but often you actually want the rear to be looser than the front as understeer is slower and less fun. So dont think your any situation claim is right. It's the right environment for such 'limit finding' rather than a road. Have you done a track day before?

Back on topic, anyone tried CS7 after PS4S? I have 5yr old 12k PS4S on my M3 and was looking to AD09 but maybe the CS7 worth a try, seems some complaints on outer edge wear but as im running loads of camber probably less of an issue on track. Have Anglesea in April so probably more sensible to wait for to finish off the PS4S. AD09 was after Spa when everyone had semi slicks and I had FOMO in the corners.
 
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Simon said:
'Finding the limits' is not something you do in aquaplaning events or emergency braking on the road...
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Finding the limits is just as much something you find the hard way when the car does something you aren't expecting due to setup as it is manually testing the limit by the way you drive.

Anyhow not sure what you are complaining about I explained the theory of what you are trying to avoid and alluded to the fact that it is unlikely to be an issue outside of extreme wet i.e. aquaplaning in my original post.
 
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Rroff said:
Finding the limits is just as much something you find the hard way when the car does something you aren't expecting due to setup as it is manually testing the limit by the way you drive.
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Ok. Let me know how your aquaplane tests go.
 
Ultimately we agree but of my comment, which you seem to have took umbrage with, was clear I thought. Not sure why you are struggling with it and talking about 'testing the limits yourself' etc. hence i thought you were suggesting finding the limit of aquaplaning?

Seeing as you prefer google rather than peoples opinions, Every authority on tyres recommends new tyres on the rear due standing water and aquaplaning. I would champion that in the interest of OCUK drivers safety.

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Kwik Fit

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www.edentyres.com

Should I Fit New Tyres to the Front or Rear? - Eden Tyres & Servicing

If it’s time to replace one or more of the tyres on your vehicle, you may be wondering where they should be fitted. There are debates about whether tyres should be fitted to the front or rear of the vehicle – let’s take a look at which is the right choice, and why.
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Half of drivers think a new pair of tyres should go on the car's front wheels, but they're wrong | Auto Express

New tyres must go on the rear axle, with part-worn treads moved to the front - whether the car is FWD, RWD or 4x4
www.autoexpress.co.uk www.autoexpress.co.uk
 
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When I say you I mean I'm general as in you the driver / car owner, which should be obvious from the context.

And as per my original post the goal is to prevent oversteer which in this context is most likely to be in wet conditions.
 
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Hi guys,
Are rim protectors worth it on a tyre? How would I know if a particular variant of a tyre has them please?

My Google armchair research says that Goodyear Eagle F1 AS6 have them but I can't find that in the description of Blackcircles.com, Costco, etc. Also these tyres are rated better on this forum too.

TIA :)
 
KwikFit have a 20% discount on Continental Premium Contact 6 for a full set. 4 tyres coming up to £617.60. Good deal imo for anyone on the fence.
 
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